Layer count increased to 256, palette size increased to 256
This commit is contained in:
parent
615ea631e2
commit
4b7991a3a6
@ -10,3 +10,12 @@ target_link_libraries(basic
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PRIVATE
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glerminal
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)
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add_executable(towers WIN32
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towers.cpp
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)
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target_link_libraries(towers
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PRIVATE
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glerminal
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)
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83
examples/towers.cpp
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83
examples/towers.cpp
Normal file
@ -0,0 +1,83 @@
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#include <glerminal.h>
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#include <cstdlib>
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#include <cmath>
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namespace
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{
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void init()
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{
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for (int i = 1; i < 256; i++)
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{
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constexpr unsigned char c = 0;
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const unsigned char v = (255 - c) * powf((i - 1) / 256.0f, 4.0f) + c;
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glerminal_update_palette(i, (v << 24) | (v << 16) | (v << 8) | 0xE0);
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}
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for (int i = 1; i < 256; i++)
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{
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const unsigned char j = i;
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glerminal_update_sprite(i,
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{
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0,j,0,0,0,0,j,0,
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j,j,j,j,j,j,j,j,
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0,j,0,0,0,0,j,0,
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0,j,0,0,0,0,j,0,
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0,j,0,0,0,0,j,0,
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0,j,0,0,0,0,j,0,
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j,j,j,j,j,j,j,j,
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0,j,0,0,0,0,j,0,
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});
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}
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for (int i = 0; i < 40; i++)
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{
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for (int j = 0; j < 25; j++)
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{
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for (int k = 0; k < 256; k++)
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{
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glerminal_set(i, j, k, k);
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}
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}
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}
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}
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void mainloop(float dt)
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{
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static float time = 1;
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time += dt;
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if (time < 1.0f)
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{
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return;
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}
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else
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{
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time = 0;
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}
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const int cx = rand() % 40;
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const int cy = rand() % 25;
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for (int i = 0; i < 40; i++)
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{
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for (int j = 0; j < 25; j++)
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{
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for (int k = 0; k < 256; k++)
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{
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const float ox = 0.05f * powf(k, 0.55f) * copysignf(sqrtf((i - cx) * (i - cx)), i - cx);
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const float oy = 0.05f * powf(k, 0.55f) * copysignf(sqrtf((j - cy) * (j - cy)), j - cy);
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glerminal_offset(i, j, k, ox, oy);
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}
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}
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}
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glerminal_flush();
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}
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}
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int main(int argc, char** argv)
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{
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glerminal_run(init, mainloop);
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}
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@ -55,7 +55,7 @@ unsigned char glerminal_get(unsigned char x, unsigned char y, unsigned char laye
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* @param x_offset offset of the cell on the x axis in the range [-128, 127], where 0 is no offset
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* @param y_offset offset of the cell on the y axis in the range [-128, 127], where 0 is no offset
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*/
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void glerminal_offset(unsigned char x, unsigned char y, unsigned char layer, char x_offset, char y_offset);
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void glerminal_offset(unsigned char x, unsigned char y, unsigned char layer, float x_offset, float y_offset);
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/**
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* @brief Upload sprite to the given sprite ID
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@ -20,7 +20,7 @@ namespace glerminal
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constexpr unsigned int GRID_WIDTH = SCREEN_WIDTH / (CELL_SIZE * CELL_SCALE);
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constexpr unsigned int GRID_HEIGHT = SCREEN_HEIGHT / (CELL_SIZE * CELL_SCALE);
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constexpr unsigned int GRID_AREA = GRID_WIDTH * GRID_HEIGHT;
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constexpr unsigned int LAYER_COUNT = 8;
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constexpr unsigned int LAYER_COUNT = 256;
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class glerminal
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{
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@ -40,7 +40,7 @@ namespace glerminal
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void set(unsigned char x, unsigned char y, unsigned char layer, unsigned char sprite);
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unsigned char get(unsigned char x, unsigned char y, unsigned char layer) const;
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void offset(unsigned char x, unsigned char y, unsigned char layer, char x_offset, char y_offset);
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void offset(unsigned char x, unsigned char y, unsigned char layer, float x_offset, float y_offset);
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void update_sprite(unsigned char id, glerminal_sprite sprite);
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void update_palette_color(unsigned char id, unsigned int color);
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@ -62,9 +62,10 @@ namespace glerminal
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unsigned int m_palette_uniform_location;
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unsigned char m_cells[GRID_AREA * LAYER_COUNT];
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char m_offsets[GRID_AREA * LAYER_COUNT * 2];
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float m_offsets[GRID_AREA * LAYER_COUNT * 2];
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unsigned char m_sprites[CELL_SIZE * CELL_SIZE * 256];
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float m_palette[64];
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float m_palette[256 * 4];
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glerminal_main_cb m_main;
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@ -1,6 +1,6 @@
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#include "glerminal-private.h"
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#define SCREEN_SIZE_UNIFORM_NAME "screen_size"
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#define GRID_SIZE_UNIFORM_NAME "grid_size"
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#define PALETTE_UNIFORM_NAME "palette"
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#define SPRITES_UNIFORM_NAME "sprites"
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#define LAYERS_UNIFORM_NAME "layers"
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@ -25,54 +25,53 @@ namespace
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constexpr char* VERTEX_SHADER_SOURCE =
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"#version 400 core\n"
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"layout (location = 0) in vec2 position;\n"
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"layout (location = 1) in vec2 offset[8];\n"
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"layout (location = 9) in ivec4 sprite[2];\n"
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"uniform vec4 " SCREEN_SIZE_UNIFORM_NAME ";\n"
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"layout (location = 1) in vec2 offset;\n"
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"layout (location = 2) in int sprite;\n"
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"uniform vec4 " GRID_SIZE_UNIFORM_NAME ";\n"
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"out VS_OUT {\n"
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" flat vec2 offset[8];\n"
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" flat ivec4 sprite[2];\n"
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" flat vec2 offset;\n"
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" flat int sprite;\n"
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" flat int layer;\n"
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" vec2 texcoord;\n"
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"} vs_out;\n"
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"void main()\n"
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"{\n"
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" vs_out.sprite = sprite;\n"
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" for (int i = 0; i < 8; i++)\n"
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" {\n"
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" vs_out.offset[i] = offset[i] * " SCREEN_SIZE_UNIFORM_NAME ".zw;\n"
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" }\n"
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" vs_out.offset = offset * " GRID_SIZE_UNIFORM_NAME ".zw;\n"
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" vs_out.layer = int(floor(gl_InstanceID / 1000));\n"
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" vs_out.texcoord = vec2(position.x + 1, -position.y);\n"
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" vec2 cell_position = vec2(1 + gl_InstanceID - " SCREEN_SIZE_UNIFORM_NAME ".x * floor(gl_InstanceID * " SCREEN_SIZE_UNIFORM_NAME ".z), -floor((gl_InstanceID) * " SCREEN_SIZE_UNIFORM_NAME ".z));\n"
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" vec2 temp = vec2((position + cell_position) * " SCREEN_SIZE_UNIFORM_NAME ".zw * 2 + vec2(-1, 1));\n"
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" vec2 cell_position = vec2(1 + (gl_InstanceID % 1000) - " GRID_SIZE_UNIFORM_NAME ".x * floor((gl_InstanceID % 1000) * " GRID_SIZE_UNIFORM_NAME ".z), -floor((gl_InstanceID % 1000) * " GRID_SIZE_UNIFORM_NAME ".z));\n"
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" vec2 temp = vec2((position + cell_position) * " GRID_SIZE_UNIFORM_NAME ".zw * 2 + vec2(-1, 1));\n"
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" gl_Position = vec4(temp.x, -temp.y, 0, 1);\n"
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"}";
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constexpr char* GEOMETRY_SHADER_SOURCE =
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"#version 400 core\n"
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"layout (triangles) in;\n"
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"layout (triangle_strip, max_vertices = 24) out;\n"
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"layout (invocations = 8) in;\n"
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"layout (triangle_strip, max_vertices = 3) out;\n"
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"in VS_OUT {\n"
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" flat vec2 offset[8];\n"
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" flat ivec4 sprite[2];\n"
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" flat vec2 offset;\n"
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" flat int sprite;\n"
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" flat int layer;\n"
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" vec2 texcoord;\n"
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"} gs_in[];\n"
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"flat out int sprite;\n"
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"out vec2 texcoord;\n"
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"void main()\n"
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"{\n"
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" gl_Layer = gl_InvocationID;\n"
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" gl_Position = vec4(gl_in[0].gl_Position.xy + gs_in[0].offset[gl_InvocationID], 0, 1);\n"
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" sprite = gs_in[0].sprite[gl_InvocationID / 8][gl_InvocationID % 8];\n"
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" gl_Layer = gs_in[0].layer;\n"
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" gl_Position = vec4(gl_in[0].gl_Position.xy + gs_in[0].offset, 0, 1);\n"
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" sprite = gs_in[0].sprite;\n"
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" texcoord = gs_in[0].texcoord;\n"
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" EmitVertex();\n"
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" gl_Layer = gl_InvocationID;\n"
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" gl_Position = vec4(gl_in[1].gl_Position.xy + gs_in[0].offset[gl_InvocationID], 0, 1);\n"
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" sprite = gs_in[1].sprite[gl_InvocationID / 8][gl_InvocationID % 8];\n"
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" gl_Layer = gs_in[1].layer;\n"
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" gl_Position = vec4(gl_in[1].gl_Position.xy + gs_in[1].offset, 0, 1);\n"
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" sprite = gs_in[1].sprite;\n"
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" texcoord = gs_in[1].texcoord;\n"
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" EmitVertex();\n"
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" gl_Layer = gl_InvocationID;\n"
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" gl_Position = vec4(gl_in[2].gl_Position.xy + gs_in[0].offset[gl_InvocationID], 0, 1);\n"
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" sprite = gs_in[2].sprite[gl_InvocationID / 8][gl_InvocationID % 8];\n"
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" gl_Layer = gs_in[2].layer;\n"
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" gl_Position = vec4(gl_in[2].gl_Position.xy + gs_in[2].offset, 0, 1);\n"
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" sprite = gs_in[2].sprite;\n"
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" texcoord = gs_in[2].texcoord;\n"
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" EmitVertex();\n"
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" EndPrimitive();\n"
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@ -83,7 +82,7 @@ namespace
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"in vec2 texcoord;\n"
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"flat in int sprite;\n"
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"uniform usampler2DArray " SPRITES_UNIFORM_NAME ";\n"
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"uniform vec4 " PALETTE_UNIFORM_NAME "[16];\n"
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"uniform vec4 " PALETTE_UNIFORM_NAME "[256];\n"
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"out vec4 FragColor;\n"
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"void main()\n"
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"{\n"
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@ -108,7 +107,7 @@ namespace
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"void main()\n"
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"{\n"
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" vec3 current_color = vec3(0);\n"
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" for (int i = 0; i < 8; i++)\n"
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" for (int i = 0; i < 256; i++)\n"
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" {\n"
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" vec4 texsample = texture(" LAYERS_UNIFORM_NAME ", vec3(texcoord, i));\n"
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" current_color = mix(current_color, texsample.rgb, texsample.a);\n"
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@ -184,13 +183,15 @@ namespace glerminal
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update_sprites();
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update_palette();
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glViewport(0, 0, GRID_WIDTH * CELL_SIZE, GRID_HEIGHT * CELL_SIZE);
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glUseProgram(m_program);
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glBindTexture(GL_TEXTURE_2D_ARRAY, m_sprites_texture);
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glBindFramebuffer(GL_FRAMEBUFFER, m_framebuffer);
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glBindVertexArray(m_vao);
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glClear(GL_COLOR_BUFFER_BIT);
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glDrawArraysInstanced(GL_TRIANGLES, 0, 6, GRID_AREA);
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glDrawArraysInstanced(GL_TRIANGLES, 0, 6, GRID_AREA * LAYER_COUNT);
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glViewport(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
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glUseProgram(m_screen_program);
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glBindTexture(GL_TEXTURE_2D_ARRAY, m_framebuffer_backing_texture);
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glBindFramebuffer(GL_FRAMEBUFFER, 0);
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@ -205,7 +206,7 @@ namespace glerminal
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{
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if (x < GRID_WIDTH && y < GRID_HEIGHT && layer < LAYER_COUNT)
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{
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m_cells[layer + x * LAYER_COUNT + y * LAYER_COUNT * GRID_WIDTH] = sprite;
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m_cells[x + y * GRID_WIDTH + layer * GRID_AREA] = sprite;
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}
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}
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@ -221,12 +222,12 @@ namespace glerminal
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}
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}
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void glerminal::offset(unsigned char x, unsigned char y, unsigned char layer, char x_offset, char y_offset)
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void glerminal::offset(unsigned char x, unsigned char y, unsigned char layer, float x_offset, float y_offset)
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{
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if (x < GRID_WIDTH && y < GRID_HEIGHT && layer < LAYER_COUNT)
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{
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m_offsets[2 * (layer + x * LAYER_COUNT + y * LAYER_COUNT * GRID_WIDTH) + 0] = x_offset;
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m_offsets[2 * (layer + x * LAYER_COUNT + y * LAYER_COUNT * GRID_WIDTH) + 1] = y_offset;
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m_offsets[2 * (x + y * GRID_WIDTH + layer * GRID_AREA) + 0] = x_offset;
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m_offsets[2 * (x + y * GRID_WIDTH + layer * GRID_AREA) + 1] = y_offset;
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}
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}
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@ -238,7 +239,7 @@ namespace glerminal
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void glerminal::update_palette_color(unsigned char id, unsigned int color)
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{
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if (id < 16)
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if (id < 256)
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{
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m_palette[4 * id + 0] = ((color >> 24) & 0xFF) / 255.0f;
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m_palette[4 * id + 1] = ((color >> 16) & 0xFF) / 255.0f;
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@ -347,7 +348,6 @@ namespace glerminal
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}, this);
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#endif
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glViewport(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
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glDisable(GL_DEPTH_TEST);
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glEnable(GL_BLEND);
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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@ -372,39 +372,14 @@ namespace glerminal
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glBindBuffer(GL_ARRAY_BUFFER, m_offsets_instance_vbo);
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glBufferData(GL_ARRAY_BUFFER, sizeof(m_offsets), m_offsets, GL_STREAM_DRAW);
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glEnableVertexAttribArray(1);
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glVertexAttribPointer(1, 2, GL_BYTE, GL_TRUE, 16 * sizeof(*m_offsets), reinterpret_cast<void*>(0 * sizeof(*m_offsets)));
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glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(*m_offsets), reinterpret_cast<void*>(0));
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glVertexAttribDivisor(1, 1);
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glEnableVertexAttribArray(2);
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glVertexAttribPointer(2, 2, GL_BYTE, GL_TRUE, 16 * sizeof(*m_offsets), reinterpret_cast<void*>(2 * sizeof(*m_offsets)));
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glVertexAttribDivisor(2, 1);
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glEnableVertexAttribArray(3);
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glVertexAttribPointer(3, 2, GL_BYTE, GL_TRUE, 16 * sizeof(*m_offsets), reinterpret_cast<void*>(4 * sizeof(*m_offsets)));
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glVertexAttribDivisor(3, 1);
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glEnableVertexAttribArray(4);
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glVertexAttribPointer(4, 2, GL_BYTE, GL_TRUE, 16 * sizeof(*m_offsets), reinterpret_cast<void*>(6 * sizeof(*m_offsets)));
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glVertexAttribDivisor(4, 1);
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glEnableVertexAttribArray(5);
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glVertexAttribPointer(5, 2, GL_BYTE, GL_TRUE, 16 * sizeof(*m_offsets), reinterpret_cast<void*>(8 * sizeof(*m_offsets)));
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glVertexAttribDivisor(5, 1);
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glEnableVertexAttribArray(6);
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glVertexAttribPointer(6, 2, GL_BYTE, GL_TRUE, 16 * sizeof(*m_offsets), reinterpret_cast<void*>(10 * sizeof(*m_offsets)));
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glVertexAttribDivisor(6, 1);
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glEnableVertexAttribArray(7);
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glVertexAttribPointer(7, 2, GL_BYTE, GL_TRUE, 16 * sizeof(*m_offsets), reinterpret_cast<void*>(12 * sizeof(*m_offsets)));
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glVertexAttribDivisor(7, 1);
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glEnableVertexAttribArray(8);
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glVertexAttribPointer(8, 2, GL_BYTE, GL_TRUE, 16 * sizeof(*m_offsets), reinterpret_cast<void*>(14 * sizeof(*m_offsets)));
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glVertexAttribDivisor(8, 1);
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glBindBuffer(GL_ARRAY_BUFFER, m_sprites_instance_vbo);
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glBufferData(GL_ARRAY_BUFFER, sizeof(m_cells), m_cells, GL_STREAM_DRAW);
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glEnableVertexAttribArray(9);
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glVertexAttribIPointer(9, 4, GL_UNSIGNED_BYTE, 8 * sizeof(*m_cells), reinterpret_cast<void*>(0 * sizeof(*m_cells)));
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glVertexAttribDivisor(9, 1);
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glEnableVertexAttribArray(10);
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glVertexAttribIPointer(10, 4, GL_UNSIGNED_BYTE, 8 * sizeof(*m_cells), reinterpret_cast<void*>(4 * sizeof(*m_cells)));
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glVertexAttribDivisor(10, 1);
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glEnableVertexAttribArray(2);
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glVertexAttribIPointer(2, 1, GL_UNSIGNED_BYTE, 1 * sizeof(*m_cells), reinterpret_cast<void*>(0));
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glVertexAttribDivisor(2, 1);
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// set up static vertex attributes
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glGenVertexArrays(1, &m_screen_vao);
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@ -481,7 +456,7 @@ namespace glerminal
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}
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// setup uniforms
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m_screen_size_uniform_location = glGetUniformLocation(m_program, SCREEN_SIZE_UNIFORM_NAME);
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m_screen_size_uniform_location = glGetUniformLocation(m_program, GRID_SIZE_UNIFORM_NAME);
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m_palette_uniform_location = glGetUniformLocation(m_program, PALETTE_UNIFORM_NAME);
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glUseProgram(m_program);
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@ -569,7 +544,7 @@ namespace glerminal
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glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_BASE_LEVEL, 0);
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glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MAX_LEVEL, 0);
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glTexImage3D(GL_TEXTURE_2D_ARRAY, 0, GL_RGBA, SCREEN_WIDTH, SCREEN_HEIGHT, LAYER_COUNT, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
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glTexImage3D(GL_TEXTURE_2D_ARRAY, 0, GL_RGBA, GRID_WIDTH * CELL_SIZE, GRID_HEIGHT * CELL_SIZE, LAYER_COUNT, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
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glFramebufferTexture(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, m_framebuffer_backing_texture, 0);
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// setup uniforms for screen shader
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@ -605,7 +580,7 @@ namespace glerminal
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void glerminal::update_palette()
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{
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glUseProgram(m_program);
|
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glUniform4fv(m_palette_uniform_location, 16, m_palette);
|
||||
glUniform4fv(m_palette_uniform_location, 256, m_palette);
|
||||
}
|
||||
}
|
||||
|
||||
@ -613,10 +588,13 @@ void glerminal_run(glerminal_init_cb init, glerminal_main_cb main)
|
||||
{
|
||||
try
|
||||
{
|
||||
glerminal::glerminal(init, main).run();
|
||||
glerminal::glerminal* g = new glerminal::glerminal(init, main);
|
||||
g->run();
|
||||
delete g;
|
||||
}
|
||||
catch (const std::runtime_error& e)
|
||||
{
|
||||
e.what();
|
||||
}
|
||||
}
|
||||
|
||||
@ -641,7 +619,7 @@ unsigned char glerminal_get(unsigned char x, unsigned char y, unsigned char laye
|
||||
return GLERMINAL_G->get(x, y, layer);
|
||||
}
|
||||
|
||||
void glerminal_offset(unsigned char x, unsigned char y, unsigned char layer, char x_offset, char y_offset)
|
||||
void glerminal_offset(unsigned char x, unsigned char y, unsigned char layer, float x_offset, float y_offset)
|
||||
{
|
||||
if (!GLERMINAL_G) { return; }
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user