encounter
/
SDL
mirror of https://github.com/encounter/SDL.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Add OpenGLES2 implementation

This commit is contained in:
Sylvain 2021-03-16 15:11:13 +01:00 committed by Sylvain Becker
parent 6e26d320c6
commit faded41ab1
1 changed files with 53 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

53
src/render/opengles2/SDL_render_gles2.c
View File

@ -958,6 +958,41 @@ GLES2_QueueCopyEx(SDL_Renderer * renderer, SDL_RenderCommand *cmd, SDL_Texture *
return 0;
}
static int
GLES2_QueueGeometry(SDL_Renderer *renderer, SDL_RenderCommand *cmd, SDL_Texture *texture,
SDL_Vertex *vertices, int num_vertices, int *indices, int num_indices, float scale_x, float scale_y)
{
int i;
const SDL_bool colorswap = (renderer->target && (renderer->target->format == SDL_PIXELFORMAT_ARGB8888 || renderer->target->format == SDL_PIXELFORMAT_RGB888));
int count = indices ? num_indices : num_vertices;
GLfloat *verts;
int sz = 2 + 4 + (texture ? 2 : 0);
verts = (GLfloat *) SDL_AllocateRenderVertices(renderer, count * sz * sizeof (GLfloat), 0, &cmd->data.draw.first);
if (!verts) {
return -1;
}
cmd->data.draw.count = count;
for (i = 0; i < count; i++) {
SDL_Vertex *v = &vertices[indices ? indices[i] : i];
*(verts++) = v->position.x * scale_x;
*(verts++) = v->position.y * scale_y;
*(verts++) = (colorswap ? v->color.b : v->color.r) * inv255f;
*(verts++) = v->color.g * inv255f;
*(verts++) = (colorswap ? v->color.r : v->color.b) * inv255f;
*(verts++) = v->color.a * inv255f;
if (texture) {
*(verts++) = v->tex_coord.x / texture->w;
*(verts++) = v->tex_coord.y / texture->h;
}
}
return 0;
}
static int
SetDrawState(GLES2_RenderData *data, const SDL_RenderCommand *cmd, const GLES2_ImageSource imgsrc)
{
@ -1333,6 +1368,23 @@ GLES2_RunCommandQueue(SDL_Renderer * renderer, SDL_RenderCommand *cmd, void *ver
break;
}
case SDL_RENDERCMD_GEOMETRY: {
SDL_Texture *texture = cmd->data.draw.texture;
const size_t count = cmd->data.draw.count;
int ret;
if (texture) {
ret = SetCopyState(renderer, cmd);
} else {
ret = SetDrawState(data, cmd, GLES2_IMAGESOURCE_SOLID);
}
if (ret == 0) {
data->glDrawArrays(GL_TRIANGLES, 0, count);
}
break;
}
case SDL_RENDERCMD_NO_OP:
break;
}
@ -2127,6 +2179,7 @@ GLES2_CreateRenderer(SDL_Window *window, Uint32 flags)
renderer->QueueFillRects = GLES2_QueueFillRects;
renderer->QueueCopy = GLES2_QueueCopy;
renderer->QueueCopyEx = GLES2_QueueCopyEx;
renderer->QueueGeometry = GLES2_QueueGeometry;
renderer->RunCommandQueue = GLES2_RunCommandQueue;
renderer->RenderReadPixels = GLES2_RenderReadPixels;
renderer->RenderPresent = GLES2_RenderPresent;